Well fellas, did my rear main yesterday, the main cap bearing was pretty bad, lubed er up, put it back together and developed a rod knock on the way home, looks like im down temporarily. Not my idea of a good time but now I have to decide if I want to swap the engine or gwt another stock xj and swap everything, so infortunatley, il have to be counted out. Did rear mains on all my 4.o and never had this issue.